PARIS (AP) — The U.S. ambassador to France has been summoned to the French Foreign Ministry following revelations by WikiLeaks that the U.S. National Security Agency eavesdropped on the past three French presidents.

Ambassador Jane Hartley is expected to appear at the ministry Wednesday afternoon, according to a French diplomatic official. The official was not authorized to be publicly named.

The summons came after France's president condemned the revelations as an "unacceptable" breach of security.

The 2006-12 documents published in French newspaper Liberation and investigative website Mediapart late Tuesday include material that appeared to capture officials in Paris talking candidly about Greece's economy and relations with Germany.